Answer :
To isolate a section of pipe before disconnecting it, safety procedures require that the pressure in that portion of the pipeline be reduced to [tex]$0\,\text{psi}$[/tex]. Here's a step-by-step explanation:
1. The objective is to isolate the section of the pipeline, which means there should be no pressure acting on it.
2. Reducing the pressure to [tex]$0\,\text{psi}$[/tex] ensures that there is no force within the pipe that could cause unexpected movement or release of fluids when disconnected.
3. Given the options:
- a. Ten psi
- b. Zero psi
- c. Five psi
- d. Three psi
4. The correct choice is the one that corresponds to [tex]$0\,\text{psi}$[/tex].
5. When the options are numbered in order, [tex]$0\,\text{psi}$[/tex] is the second option.
Thus, the final answer is:
[tex]$$2$$[/tex]
1. The objective is to isolate the section of the pipeline, which means there should be no pressure acting on it.
2. Reducing the pressure to [tex]$0\,\text{psi}$[/tex] ensures that there is no force within the pipe that could cause unexpected movement or release of fluids when disconnected.
3. Given the options:
- a. Ten psi
- b. Zero psi
- c. Five psi
- d. Three psi
4. The correct choice is the one that corresponds to [tex]$0\,\text{psi}$[/tex].
5. When the options are numbered in order, [tex]$0\,\text{psi}$[/tex] is the second option.
Thus, the final answer is:
[tex]$$2$$[/tex]
